package com.dd.service.Impl;

import com.dd.entity.User;
import com.dd.service.UserService;

import java.util.List;

public class UserServiceImpl implements UserService {
    @Override
    public List<User> selectAll() {
        System.out.println("查询所有用户信息");
        return null;
    }

    @Override
    public User selectById(Integer id) {
        System.out.println("通过id查询用户信息");
        return null;
    }

    @Override
    public void insert(User user) {
        System.out.println("添加用户信息");
    }

    @Override
    public void update(User user) {
        System.out.println("修改用户信息");
    }

    @Override
    public void delete(Integer id) {
        System.out.println("通过id删除用户信息");
    }
}
